SharePoint Designer Missing Content Tab for New Workflow

If you are trying to create a new workflow, yet seem to be missing a File -> New -> Sharepoint Content tab or a File -> New -> Workflow tab, then it is likely because you have not connected to your SharePoint site.

In order to correct this issue, click File -> Open Site and type in the URL of your SharePoint site. SharePoint Designer should then connect and the missing Workflow tabs or choices should appear.